What other internal HDDs can be used as a replacement for a Lenovo G560 Notebook model 0679?

Few days ago my laptop was constantly telling me that my hard drive may be failing and that I should backup my data. Fortunately i did back up all my important files to my external HDD and now, the OS installed (Win7) doesn't boot up anymore. Also, when I checked the BIOS, it says my internal HDD is "[Not Detected]" anymore. I'd like to buy a new replacement HDD for my Lenovo G560 but I fear I may not find an internal HDD very similar to what it has now. It is a Western Digital Scorpio Blue HDD model WD3200BPVT. Please help. To any computer experts out there. I really need to get this fixed as soon as possible.